Trolley-wheel mounting.



H. HOLLAND.

TROLLEY WHEEL MOUNTING.

APPLICATIQN FILED JAN-1151915.

rammed Mar. 6,1917.

2 SHEETS-SHEET l.

C%0- f; L l #my HMM H. HOLLAND.

TROLLEY WHL-:EL MOUNTING.

APPLICATION FILED MPL11. 1915 1,218,555. Patented Maf-6,1917;

' 2 SHEETSAHEET 2..

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e' v- L Wl T11/E SSE S: /N VE /V TOI? e0/6." v v #my /Mam HENRY HOLLAND, OF CLEVELAND, OHIO.

TROLLEY-WE-IEL MOUNTING.

Specification' of Letters Patent.

Patented Mar. (i, 19T?.

Application filed January 11, 1915'. Serial No. 1,507.

To all whom t may concern: l

Be 1t known that I, HENRY HOLLAND, a

citizen of the United States, residing atV Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and useful Improvements in TrolleyNVheel Mountings, of which the following is a specification.

This invention pertains to an improvement in trolley wheel mountings, and the main object of the invention is to secure close and uniform electrical contact with and through the wheel regardless of the possible wear of parts, the inversion of the wheel and other conditions of service. Other and minor objects are attained as will appear in the further description of the invention.

In the accompanying drawings, Figure l is a side elevation of a trolley wheel and a harp embodying my invention, and Fig. 2 is a sectional elevation thereof on line 2 2, Fig. l. Fig. 3 is a sectional view on line 3-3, Fig. l. Fig. 4 is a cross section of one side of the harp and of the end of the tight ening loop er wedge on a line corresponding to 4-4, Fig. 1. Fig. 5 is a detail of one of the side bearing disks for the wheel, and Fig. G is a detail of the so-called loop or wedge as used in Figs. l, 2 and 3.

Fig. 7 is a side elevation of a trolley wheel and harp in working relations with an over head wire and disclosing a modification of the wedging loop, and Fig. 8 is a sectional plan on line 8 8, Fig. 7 Fig. 9 is a cross section of the wheel and harp on line 9-9, Fig. 7. Fig. 10 is a detail of one of the side washers and Fig. 1l a longitudinal section of the loop.

The harp yh and the wheel fw maybe regarded as of a common and well known type, less certain featural differences as will hereinafter appear. The shaft s for the wheel is tubular or hollow so as to provide a chamber for a suitable lubricant and is provided with small orifices 2 at its middle to emit the lubricant and an opening 3 in an otherwise closed end to supply the lubricant to the shaft. At its other end the said 'shaft is flared somewhat as seen at 4, which produces an annular enlargement of the shaft at that point, and the harp is fashioned with a slightly tapered opening corresponding tov said enlargement andthe parts are flush outside with the plain side of the harp to afford a smooth surface and prevent catching on the trolley wire. VThe said shaft is engaged and tightened at the other end by a screw thread n and a cotter pin 6 is enteredl through the harp nut and shaft and locks the shaft in place. A closure @within-the flared end of the shaft serves as a cap or stopper and is swaged or otherwise permanently secured therein.

The trolley wheel has a hub with flat finl' 'l ished sides and is mounted rotatably upon shaft s and confined at its sides between the sides of the harp by means of renewable washers 7, Figs. 2, 3 and 5, or washers 7', Figs. 3, 9 and 10 and by a substantially wedge-shaped lyoke or loop S, or` wedge of loop' shape interposed at one side between the harp and the washer 7 The said wedge or loop is preferably on the side of the wheel. next to head 4 of the shaft s as seen in Fig. 2, and the harp 71, is provided with an inclined recess or flat bearing surface in that side to make accommodation 'for the said wedge. rlhe lower end of the wedge has a projecting guide 9 operating in a notchy or slot 9 in the side of the harp, whereby rotation of the wedge is prevented. A spiral spring l0 is attached to the hooked eXtremity 12 of the wedge and to the'harp at its `opposite end and adapted' to draw the wedge into tightening relations and thus promote the close and sustained contact of the partsy for which it'is designed. v

The washers 7 have two ears e to hold them in stationary position with the harp or wedge as seen in Fig. 3 and a single ear e as 'seen in Fig. 10. Either construction is sufficient. v

By means of the said wedge or loop 8 apractical takeup is provided for possible side wearl of the trolley wheel or looseness in the side bearings, and a perfect mechani* cal and electrical contact is maintained under all the varying conditions of service. All lateral play of the wheel is eliminated, and the bifurcated ends of the harp are kept apart in locked relations with the shaft. Moreover, a solid and unyielding contact is established with the sides of the wheel and the harp by the wedge and the washers. The corresponding loop or wedge 8 in Figs. 7 to 11 is essentially of the gravity type rather than spring controlled and is shaped as seen in Figs. 7 and 11, with wedging face portions at both, ends and thinnest at the middle thereby providing i a self-acting wedge capable of operation in reversely-inclined positions of the trolley wheel as occurs when the direction of the car is reversed and the tro-lley pole is in-` of a size substantially the sameas a trolley wire, and aT narrowannular channel or slot 15 in the bottom of'said groove helps to center 'the wire and hold it therein rather than to run more or less in contact with the sides ofthe main groove, as otherwise occurs. In this way, the wear islept at the center of the wheel and away from the sides Y of the wheel, and groove 14 also prevents the wheel from riding off Vthe wire. v

Two cotter pins are shown in Figs. 8 and 9 to hold the shaft inA place, andrthis is alternate to the fastenings shown in yFigs. 2 and l3.

A compression spring may be used in lieuY of spring l0, but in either case the spring is retired sufficiently within the outer face of the harp to avoid displacement'thereof by contact with the trolley wire in the event of the trolley wheel becoming displaced or in being placed upon the wire.

/Vhat I claim-isf l. A trolley wheel and mounting therefor having a wedge member interposed therebetween, said wedge member having reversely related wedging surfaces.

2. A trolley' wheel and mounting, and a reversible gravity wedge in side contact relationswithsaid wheel and mounting.

3. In trolley wheel mountings, a wheel and a shaft therefor and a wedgeinterposed between the said parts at right angles to said shaft and adapted to produce Va close The wedge is actually inverted,

contact of the parts at the sides of the wheel and promote the fiow of the electric current.

Y 4. n trolley wheel mountings, a harp and a wheel. having a hub with finished sides and a shaft through said wheel on which the harp is mounted and a wedge adapted to automatically take up any wear between said partsrand to secure a close electrical contact therein, said wedge being transverse to said shaft.

5. A trolley wheel and a harp, a shaft supporting said wheel in said harp and a wedge divided by said shaft and adapted to produce. a closed electrical contact between harp and wheel.

6. A trolley wheel and a harp in which the wheel is mounted, and a substantially loop shaped wedge at one side between said harp and the wheel and adapted toclosel the electrical contact on the wheel.

7. A trolley wheel and a harp and shaft supporting said wheel, `washers on either side of the wheel and a wedge next to the harp adapted to 'press said washers closely against the wheel. Y

8. A trolley wheel and a harp and a shaftV supporting the same, the said shaft being tubular and having a flared head at oneend secured inthev side of the harp and a wedge embracing the shaftbetween said harp and the wheel to maintainy the said parts in constant electrical contact.r f

9. A ytrolley wheel mounting, a tubular shaft therein having a HaringV end anda closure permanently "fixed inv said end and fastenings on the-other end of shaft'adapted tohold the shaft inplace, a wheel on said shaft and a yoke-shaped wedge sleeved on said shaft between said wheel and mounting.

10. A trolley wheel and a mounting' therefor and a wedge in gravity relations between said wheel and its mounting tofmaintain constant'electrical contact between the said parts. v i

In testimony whereof I affix my signature in presence oftwo witnesses.

i HENRY HOLLAND.

lVitnesses i '-R..B. MOSER, M. SorIwAm Copies o this patent may be obtained for live cents each, by addressing the Commissioner of Patents,

-' Was11ington,D.C. wi; .Y 

